If your looking for a quick way to get across the sea. This is not it, their slow and stamina runs out fast. Believe it or not their very vunerable and other megs will still attack. Their turning radius isn't great either. Your better off with a Sarco.
These are actually really easy to tame. Find one and lure lure it closer to the shore and then just stand on land where u are safe and keep shooting it. Make sure there are no other sharks or mantas that can hurt you while taming your shark. Good luck